Magnetic clutch.



PATENTED MAY 22, 1906.

H. H. BUTLER.

MAGNETIC CLUTCH.

PPIIATION FILED JAB. 18, 1902.

z sHBBTBsHEBT 1.

No. 821,020. PATENT@ MAY 22, 190e.

H. H. CUTLER. V MAGNETIC CLUTCH.

APPLICATION FILED JAHJB, 1902.

2 SHEBTS-SHEET 2.

UNITED STATES .PATENT OFFICE.

HENRY H. (QUTLER, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO THE .ARNOLDMAGNETIC CLUTCH COMPANY, OF MILWAUKEE, WIS- OONSIN, A CORPORATION OFWSOONSIN.

MAGNETIC CLUTCH.

Specification of Letters Patent. Patented Maly 22, 1906.

Apulia-ation filed January 18, 1902. Serial No. 90.29B.

lTo :1.715 whom it may concern.-

Be it known that i', HENRY H. CUTLER, e citizen of the United States,residin at Milwaukee, in the county of Milwau ee siid State ofWisconsin, have invented o. certain new and useful Improvement inMagnetic Clutches, of which the following is e full, eiser, concise, andexact description, reference being had to the accompanying drew? in s,forming e part of this speeicetien.

y invention relates generally to in agnetic clutches, and moreparticularly to double clutches or clutches designed to drive e, movchieelement at different speeds or in different directions or et dierentspeeds and directions. Such devices are of use in various classes ofmachinery, among which may be mentioned metellaners, inV which it isdesired to drive the hed of the machine in one direction et slow speedand in the reverse direction at a greater speed. In prior devicesemploying magnetic eiiitches for this lsind kindred purposes trouble isexperienced in quiekiy causing the clutch to release or let go themagnetic member, owing to the residual magnetism, and in case of areversing-clutch, as above mentioned, whore one clutching member isintended to release and the other to immediately clutch and rotate thedriven part in the opposite direction, thc shaft tends to lock and theparts ere thus suhjected toiun due strain.

My invention `has for one of its objects the provision of means wherebya. sharp and heevjfr blow is (.lelivei'ed to the sticking errns.- turewhen it is desired to free the sinne from the magnet-,poles and wherebyin the double face or reversing type the said blow is delivered beforethe reversing clutch is applied'.

To'these ends and suoli others as may here inefter appear the invcn tioncomprises in thel preferred construction a rotatebie or driven memberadepted to communicate motion to the desired part, es a plenor-beiLtheop osite faces of said member having clienne s formed therein in whichare located thc. magnet-coils. Suitable armature-disks coniprising thedriving ports are adapted to cooperate with said magnet-faces and eredriven et desired speeds and in opposite'iimotions, whereby when onedisk is attracted to the fece of the said member the etter is rotated inone direction sind when tho other is attracted thcret(` it is driven inthe reverse direction. In order to prevent one disk from coming intoContact with the seid member before the opposite disk exigencetherewith, even thou h the one shouid cng thereto, e Vplurality o insare passed through the said member and) ere slightly louV er then thethickness of the seine. A slight play or lost motion is also permittedbetween the armetures and pins'.v When, therefore, the our rent is cutofi' from one coil and thrown onto the other, the armature of the latteris suddenly attracted end owing to the said play or lost motion acquiresconsiderable inoinen tum before it strikes the Said pins, whereby esharp end heavy lilow is delivered to the `opposite armature, thuscausing it to be freed from the seid member` The length vof the pins issuch that but one disk can be in contact with the seid member at s.time, wherehy ell danger from the sticking armature is prevented. Therelation of the attracting end attracted members may be reversed and themagnets located in the driving parts instead of in the driven part, butthe principle would romain the seine.

In the accom ienying drawings, Fi ure l is a. pien view o the inventiones app ied to n reversing-ciu tch. Fig. 2 is e sectional view on theline 2 2, Fig, l looking in the direction of the arrows. Fig. 3 is a.sectional view on the line 3 3, Fig. 2, thc circuit arrangement beingalso shown. Fig. 4 is a view of e modi lied arrangement of' clutch andgearing as attached to plencrs; and Fig, 5 is en end view el.' thegearing.

Like reference characters designate like 'perts throughout. I

in Fig. 1 is shown the motor 2, e large pinion '3 upon. one ond of itsshaft meshing with n gear 4, mounted upon mid ndeted to rotete the shaft5, supported in eeriiigs 6, which hearings in case the device is used toeperatc a pliincr may he mounted directly upon the immo of thc planner.The motor is provided with siiitelile supporting lugs or feet '7 and maybe ofr'eny desired type. U on the other end of the motor-shaft e snm lerpinion 8 is cerri'cd, which meshes )with en intermediate geni" il,supported in suitable bearings 1() und in turn meshin with e gear Il ofs eciel typo Kridingr loosey upon the seid jslieft 5. This gem', esshown in Figs. 2 and x are connected by suoli planer in its movement. 5o

g5-a pulley adapted to 1o ot said bolts and having a slightreciprocating motion thereon..

The. driven member 17 has annular channels 18 formed in its oppositeraces, in which the magnet-coils 1t) are carried. These coils suitablewires 2t) und 21 with the collector-rings 22, 23, and 24, mounted uponthe said member and insulated therefrom by the insulating bars or strips25. Suitable brushes 26, 27, and 28, carried by 2o the suitablestationary support 29, are adapted to bear upon the rin s 22, '23, and24 to make electrical contact t erewith. The said brushes are connectedwith the conductors 30, 31, and 32 ol' the electric circuit, a switch,33, being provided to Shift the circuit from the conductor to theconductor 82. This Iswitch niay be conveniently arranged to beautomatically shifted by the' bed ot" the The driving memier carries theear-wheel 35, which is adapted to mesh wit the rack-gear carried uponthe bed of the planer, although it will be understood that it mayintermesh with other gearing or that it maybe made i n the form ofcommunicate motion with the driven parts by means of' belts or otherconnecting devices. A suitable bearing-sleeve 36 is provided for saiddriven member and'provision is made at 37 and 38 4o for thoroughlyoiling the said bearing.

At the side of the driven men'iber on which the weer 3.5 is located anarmature-disk 39, simi ar to the opposite dish 16, is carried by and ada)ted to reciproeate sli fbtly upon the heads o bolts 40, secured in t iespider-arms 41 ofthe sleeve 42, the said slee ver being secured torotate with the sha1' t 5 by ineens of the key 43. In order that but onearnmturedisk may be brought into eontaet with the 5o driven member at atime, pins 45 extend through the said member and are slightly longerthan the thickness ot said member, whereby when one ol' the disks is incontact with the corresponding face ot the member the opposite ends ofthe pins project beyond the adjacent lacc. A slight playY or lost motionis also permitted between the armaturedishs 16 und 3.) and the pins` 15,whereby when an armature is attracted it enquires sullicient 6omomentlun before striking the pins to deliver' n, heavy blow upon thepins and through them upon the opposite armature to free the lattertroni the, ace ol tlfc driven member,

C5 circuit through. conductors :at :im .ti to the gized and attracts thearmature-disk lt to that l'acc of the driven member and causes them torotate together, thus drivin;r the rear S in onedirection at a slowspeed. When the switch ist hanged to its other position to connect withthe cmuluctor di, the current is cul, olll trom the said lirst coil ltland passes through tlt` coil in the op iosite face, which energize thisside ot the t rivcn member and attracts the disk ritt. Although thecurrent has been eut oil from the coil of the o posite nuignet. theimmature-disk 16 will e ing thereto, owing to the residual magnetism;butI the attraction of the, armature 39 causes it to strike the pins vt5with sutlicient torce to separate the disk t6 from the adjacent lace ot'the driven member. The said member now in physical contact with themurature-dish Htl, which is rotating?T in the opposite direction at agreater speed, and therefore rotates with it in the direction reverse ofthat bet'ore described.

ln the moditied arrangement ol Fig. 4, 50 designates the motor, theshaft ol' which i provided with an extension 5l, ca"rvin; Y thc part 17ol" the clutch, which is keyed thereto to cause it to rotate with thesame. 'lhe attracted disks 52, which are shown o iposite the faces ot'the member 17. correspond to the similar disks lt and 3".) oil theprevious Iig uros. They are'likewise carried upon suit able pins 5.),which are threaded Ihr( ugfh the arms` ol' thc .spiders tit and 4", farricd bv the sleeves l2 and a l resper tively. lntthis` form, however.thc sleeves ride loosely upon the shaft and are secured to pinions 54and 5.3, respectively, which intcrmesh with gears 5G and 57, carriedupon a shalt 5S.A At the und of the latter Shaft a bevel-gear 5t) issecured and meshes with a corresponding gear titl, carried b v avertical shalt. which is adapted to be connected with the mechanism olthe planer in yany suitable wav` ards G] and 62 are secured to theplanta-bed (i3, carrying the shalt 5b and extension 5l ot themotor-slnll't. .ln this l'orm. ot thc invention tbe size of thc clutchmay be materiali) reduced and its cost lessened. 'l`he clutch properorthe member 17 is secured direeth to the motor-shaft'. and' as itcarries the coils it is ol"considerable weight and serves the purpose ofa (ly-wheel upon said lshall. 'l`he gears remain stationair)i even whenthe motor is running` il' neither side ot' the clutch is energized. 1tis not neeessaijv to form the gear-teeth upon the member 1T, as in thecase ot' the form of invention shown in Figs. t, 2, and 3, 'lhe samearrangement as to the pins Ll5 existsin this l'orni as in thatpreviousl)v described.

Suitable stand- IOC claim as new, and desire to secure by LettersPatent, iisl. The combination with clutch members, of a second member,and means to attract either of said clutch members and the second membertogether, and further means actuated when one of said members is firstattracted to release by impact the other of said members, substantiallyas described.

2. The combination with two clutches, of means actuated when one clutchis energized to release by impact the second clutch, sub# stantialiy asdescribed.

3. The combination with. two clutches adapted to be alternatelyenergized, ofmeans actuated when one of said clutches is energized torelease b impact the second clutch, substantially as ascribed.

4. The combination with two clutches adapted to drive machinery atdifferent speeds and to be alternately energized, of means actuated whenvone of said clutches is energized to release the V second clutch byimpact, substantially as described.

5. The combination with two clutches ar ranged to drive machinery inopposite directions and adapted to be ener ized, of means for causin rone of said clutc es when energized to relbaso by impact the oppositeclutch, substantially as described.

6. rl`he combination with two clutches arranged to o crate machinery indifferent directions an at different speeds, said clutches beingadapted'to be alternately energized, of means to cause one of saidclutches when acv tuated to release by impact the other clutch,substantially as described.

7. In a magnetic clutchdevice, the combination with a common member, oftwo copcratin members, one located opposite each face o lthe commonmember, means to cause mutual attraction between said common member andeither of said coperating members, pins carried by the common member andadapted to be engaged by either cfsaid other members when attracted tothe oommon member said pins bein slightly longer than the thic ness .ofthe sai carr 'ng member and slightly shorter than the distance betweensaid op osin members when one is attracted and t e ot er unattracted,substan-4 the opposite armature substantially as described. Y

9. In a magnetic clutch, the combination with a clutch mem ber havingchannels formed in its opposite faces, magnet-coils located in saidchannels, armature-disks located opposite the said channels and adaptedto be attracted by the ma nets, pins carried by the clutch memberancadapted' when one of said armatures is attracted to receive theimpact of said armature and deliver it to the opposite armature wherebythe latter is released from the clutch member, substantially asdescribed.

10. The combination witha common rotatable member, means for energizingeach face thereof, a second rotatable member mounted Y opposite eachsaid lace of said common member, and means whenone of said secondmembers is initially attracted to the adjacent face of said commonmember to release the other second member by the impact of a blow deflivered thereto bythe said attracted member,

substantially as described.

ll. The combination with a magnet member, of two opposed members free torotate inde endently of each other and adapted to beallternatelyattracted by said magnet member, and means to releaseonesueh member from the magnet member by the other opposed member whenthe latter is attracted, substantially as described.

l2. YThe combination with a shalt, of a clutching mechai'iism mountedupon said sha-ft and comprising a cinnmon member, and a second memberopposite cach face of said common member, means to attract either. of

'said second members and said common member together, and further meansactualed when one of said second members and the common member areinitially attracted together to release .t'liie other of said secondVmembers from said bommen member by the im act of a blow deliveredthereto, substantia ly as described.

13. In a magnetic clutch, the combination with a rotatable main bod 'andan eue rgizing coil located on each side or said main body, ofindependently-rotatable armatures, one on each side of said main body,arid a sliding rod extending through said main body of a'length somewhatgreater than the width of said main body, whereby as one armature movesup to said main body the other is forced away therefrom.

14. In a variable-speed device, a revoluble shaft, a magnet having aplurality of coils .fastened thereon, inde endenttransmittingwheelsloose] mounts on said shaft, an ar- `mature ri idlyconnected with each of said wheels eac i armature facingr a pole orpoles of said magnet means for controlling the energization oi theactuating-coils of the magnet IIC independently of eachother, and meansfor preventing said armatures from simultaf neously eontaeting with.their respective magnet-laces when the eoils ol" said magnet areenergized.

l5. ln a variable-speed deviee, a revolublf` shalt, a magiA at having aplurality of eoils fastened thereon, tra]lsmittlng-wheels of dil'-ferent diameters` loosely mounted on said shaft, an armature rigidlyconnected with each of said wheels eaeb armature laeing :l pole or polesol' said magnet, means ['or eontrolling the energixation ol theinagnetwoils independently of eaeh other, and means for preventing saidarmatures from simultaneously eontae ting with their respective in agnet-laees when theeoils of said magnet are energized, said meansComprising a rod or rods extending through said. magnet and having alength slightly greater than the distanee between the opposing faces ofsaid magnet.

ll. In avaliable-speed mechanism, a revolublo shaft, a magnet fastenedthereon` independent translnitting-wheels loose] r mounted on said shaf1 eaeh of said wheels )eilig fastened to a disk which faces a, pole orpolesof the magnet and forms an armature therefor, and a rod or rodspassing through said magnet whereby said armatures are prevented fromsimultaneously (.vontaeting with the opposing l'aees ol said magnet.

l?. In combination, a revoluble shaft, a double-faced eleetromagnetmounted on said shaft, two independent armatures loosely mounted on saidshaft and adapted to eoaet with the opposing faees of saidmagnet, and arod or rods carried by said magnet for the purpose of forcing onearmature away from its magnet-lace when the other armature 1s 1n Contactwith its magnet-face.

18. In a magnetic eluteh, the combination with the main body andenergizing-coils loeated on either side of said mainbody,` of relativelyrotatable armatures on op osite sides ol' said main body, a sliding rod)extending table body is foreed away from said third body.

20. The combination with two relatively movable bodies, of a third or(ventral/body,

electromagnetic windings for bringing either of said relatively movablebodies into engagement with said third body and means whereby when oneof said relatively-movable bodies is brought into engagement with saidthird body the other relatively movable body is foreed away from saidthird body.

21. The combination with two relatively movable bodies, of a third orcentral movable body, eleetroma netie windings lor bringing either ofsaid re ativelymovable bodies into engagement with said third body, anda rod supported bysaid third body for forcing one of said relativelymovable bodies away from said third body when the other relativelymovable body is in engagement with said third body. 4

In witness whereof I have hereunto subscribed my name in the presence oftwo witnesses` HENRY H. CUTLER. Wlitnesses:

F. lt. BAeoN, F. L. Planer-1.

